1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2012, 2013 SAP AG. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef OS_AIX_VM_OS_AIX_INLINE_HPP
27 #define OS_AIX_VM_OS_AIX_INLINE_HPP
28
29 #include "runtime/atomic.inline.hpp"
30 #include "runtime/orderAccess.inline.hpp"
31 #include "runtime/os.hpp"
32
33 // System includes
34
35 #include <unistd.h>
36 #include <sys/socket.h>
37 #include <sys/poll.h>
38 #include <sys/ioctl.h>
39 #include <netdb.h>
40
41 // Defined in the system headers included above.
42 #undef rem_size
43
44 inline void* os::thread_local_storage_at(int index) {
45 return pthread_getspecific((pthread_key_t)index);
46 }
47
48 inline const char* os::file_separator() {
49 return "/";
50 }
51
52 inline const char* os::line_separator() {
53 return "\n";
54 }
55
56 inline const char* os::path_separator() {
57 return ":";
58 }
59
60 // File names are case-sensitive on windows only
61 inline int os::file_name_strcmp(const char* s1, const char* s2) {
62 return strcmp(s1, s2);
63 }
64
65 inline bool os::obsolete_option(const JavaVMOption *option) {
66 return false;
67 }
68
69 inline bool os::uses_stack_guard_pages() {
70 return true;
71 }
72
73 inline bool os::allocate_stack_guard_pages() {
74 assert(uses_stack_guard_pages(), "sanity check");
75 return true;
76 }
77
78
79 // On Aix, reservations are made on a page by page basis, nothing to do.
80 inline void os::pd_split_reserved_memory(char *base, size_t size,
81 size_t split, bool realloc) {
82 }
83
84
85 // Bang the shadow pages if they need to be touched to be mapped.
86 inline void os::bang_stack_shadow_pages() {
87 }
88
89 inline void os::dll_unload(void *lib) {
90 ::dlclose(lib);
91 }
92
93 inline const int os::default_file_open_flags() { return 0;}
94
95 inline jlong os::lseek(int fd, jlong offset, int whence) {
96 return (jlong) ::lseek64(fd, offset, whence);
97 }
98
99 inline int os::fsync(int fd) {
100 return ::fsync(fd);
101 }
102
103 inline char* os::native_path(char *path) {
104 return path;
105 }
106
107 inline int os::ftruncate(int fd, jlong length) {
108 return ::ftruncate64(fd, length);
109 }
110
111 // macros for restartable system calls
112
113 #define RESTARTABLE(_cmd, _result) do { \
114 _result = _cmd; \
115 } while(((int)_result == OS_ERR) && (errno == EINTR))
116
117 #define RESTARTABLE_RETURN_INT(_cmd) do { \
118 int _result; \
119 RESTARTABLE(_cmd, _result); \
120 return _result; \
121 } while(false)
122
123 // We don't have NUMA support on Aix, but we need this for compilation.
124 inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; }
125 inline bool os::numa_has_group_homing() { ShouldNotReachHere(); return false; }
126
127 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
128 size_t res;
129 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
130 return res;
131 }
132
133 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
134 size_t res;
135 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
136 return res;
137 }
138
139 inline int os::close(int fd) {
140 return ::close(fd);
141 }
142
143 inline int os::socket_close(int fd) {
144 return ::close(fd);
145 }
146
147 inline int os::socket(int domain, int type, int protocol) {
148 return ::socket(domain, type, protocol);
149 }
150
151 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
152 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
153 }
154
155 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
156 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
157 }
158
159 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
160 return os::send(fd, buf, nBytes, flags);
161 }
162
163 inline int os::timeout(int fd, long timeout) {
164 julong prevtime,newtime;
165 struct timeval t;
166
167 gettimeofday(&t, NULL);
168 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
169
170 for(;;) {
171 struct pollfd pfd;
172
173 pfd.fd = fd;
174 pfd.events = POLLIN | POLLERR;
175
176 int res = ::poll(&pfd, 1, timeout);
177
178 if (res == OS_ERR && errno == EINTR) {
179
180 // On Linux any value < 0 means "forever"
181
182 if(timeout >= 0) {
183 gettimeofday(&t, NULL);
184 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
185 timeout -= newtime - prevtime;
186 if(timeout <= 0)
187 return OS_OK;
188 prevtime = newtime;
189 }
190 } else
191 return res;
192 }
193 }
194
195 inline int os::listen(int fd, int count) {
196 return ::listen(fd, count);
197 }
198
199 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
200 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
201 }
202
203 inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) {
204 // Linux doc says this can't return EINTR, unlike accept() on Solaris.
205 // But see attachListener_linux.cpp, LinuxAttachListener::dequeue().
206 return (int)::accept(fd, him, len);
207 }
208
209 inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags,
210 sockaddr* from, socklen_t* fromlen) {
211 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen));
212 }
213
214 inline int os::sendto(int fd, char* buf, size_t len, uint flags,
215 struct sockaddr* to, socklen_t tolen) {
216 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen));
217 }
218
219 inline int os::socket_shutdown(int fd, int howto) {
220 return ::shutdown(fd, howto);
221 }
222
223 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
224 return ::bind(fd, him, len);
225 }
226
227 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
228 return ::getsockname(fd, him, len);
229 }
230
231 inline int os::get_host_name(char* name, int namelen) {
232 return ::gethostname(name, namelen);
233 }
234
235 inline struct hostent* os::get_host_by_name(char* name) {
236 return ::gethostbyname(name);
237 }
238
239 inline int os::get_sock_opt(int fd, int level, int optname,
240 char* optval, socklen_t* optlen) {
241 return ::getsockopt(fd, level, optname, optval, optlen);
242 }
243
244 inline int os::set_sock_opt(int fd, int level, int optname,
245 const char* optval, socklen_t optlen) {
246 return ::setsockopt(fd, level, optname, optval, optlen);
247 }
248 #endif // OS_AIX_VM_OS_AIX_INLINE_HPP